Dyfyniad APA

Steinhardt, P. J., & Turok, N. (2007). Endless universe: Beyond the Big Bang. Doubleday.

Dyfyniad Arddull Chicago

Steinhardt, Paul J., and Neil Turok. Endless Universe: Beyond the Big Bang. New York: Doubleday, 2007.

Dyfyniad MLA

Steinhardt, Paul J., and Neil Turok. Endless Universe: Beyond the Big Bang. Doubleday, 2007.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.